How can I remove "PASSWORD REQUIRED" everytime I open my email screen?

[iMore Question]

Everytime I open my email screen I am asked for my password by the window pasted below. I do not NEED my password to access my emails! This happens regardless of which email I am using (gmail, yahoo, aol, etc)
How can I get rid of this window???

Password Required
Enter the password for the
Yahoo! Account
"emailaddress"@yahoo.com

Cancel OK

 

[mikeo007]

Go to: settings -> Mail, Contacts, Calendars

Click on the yahoo account in question and then tap the account name on the next page as well.
Make sure your password is entered correctly on this next screen and then click done.